I've noticed this as well. NYC is grimy and can get dirty, but it's not the kind of unsanitary filth that you might find in a sewer. As such, I don't mind walki

I've noticed this as well. NYC is grimy and can get dirty, but it's not the kind of unsanitary filth that you might find in a sewer. As such, I don't mind walking about all day and getting a bit sooty, at least I won't catch something from it.